KUMAR, Vasanth; YADAV, Umesh; KUMAR, Awan; VIJAYLAKHSMI, -. The mechanical heart valve TTK Chitra is inexpensive and of proven effectiveness (widely used in India and then in Nepal). Medical Journal of Eastern Nepal, [S. l.], v. 1, n. 1, p. 49–52, 2022. DOI: 10.3126/mjen.v1i1.45864. Disponível em: https://nepjol.info/index.php/mjen/article/view/45864. Acesso em: 31 jan. 2025.